when you purchase an item from the secondary market, do you ever worry that the game used piece might have been altered while in the possession or previous owner(s), such as they having worn a game used jersey, or used an equipment for personal use? one time my friend purchased a game used bat on Ebay, was able to photo match most of it to the end of the season when it was collected and authenticated but there were some markings on the bat that didn't appear on the photo.